Original TCV2 ATS Controller Unit for TCS2P125, TCS3P125, TCS4P125 Product overview This TCV2 automatic transfer switch controller is designed as a direct replacement controller for TCS2P125, TCS3P125, and TCS4P125 transfer switches. It provides the control logic and source monitoring needed to switch power automatically between main and standby sources, while also supporting manual operation when required. Key benefits Reliable automatic switching to reduce manual intervention and minimize power interruptions. Direct compatibility with TCS2P125, TCS3P125, and TCS4P125 transfer switch models for straightforward replacement. Designed to match the control functions expected from a TCV2 controller, including source sensing, transfer logic, and timing. Compact controller footprint that installs inside the existing ATS enclosure without requiring significant panel modification. Robust construction for continuous operational use and stable performance in typical power switching applications. What this unit does Monitors utility and backup source status and executes transfer or sequences according to standard TCV2 control logic. Provides automatic and manual control modes to suit routine operation and maintenance needs. Allows configurable timing of transfer and retransfer to protect connected equipment and avoid nuisance transfers. Compatibility and installation Compatible with TCS2P125, TCS3P125, and TCS4P125 transfer switch assemblies. Designed to fit the original controller location and interface with the existing control terminals used by those switch models. Intended for technicians familiar with ATS wiring and testing procedures. Practical attributes Function: Automatic transfer switch control, manual override capable, source sensing and timed transfer logic. Compatibility: Fits TCS2P125, TCS3P125, TCS4P125 transfer switches. Size and mounting: Compact form factor for inpanel installation within standard ATS enclosures. Material and durability: Enclosure and components selected for reliable operation in electrical control environments. Performance: Stable control of transfer operations to reduce interruption time and support predictable retransfer behavior. Typical use scenarios Residential or small commercial generator backup: Automates switching between utility and standby generator power during outages, restoring service without manual switching. Commercial building or small facility: Coordinates transfer and sequences for building distribution panels to maintain business continuity during power events. Industrial equipment and maintenance operations: Provides manual override for controlled source changes during maintenance while retaining automatic protection during normal operation. Why choose this controller This TCV2 controller provides the core control functions required by TCS2P125, TCS3P125, and TCS4P125 transfer switches, enabling reliable automatic transfers and straightforward replacement installation. It is intended for use where accurate source monitoring, predictable transfer logic, and compact inpanel mounting are required.